Mullion center



July 15, 1930.

Inventor Q1647 50/7 16 24 Patented July 15, 1930 UNITED STATES OSCAR SCHIELD, OF MEDFORD,,WISCO1\TSIN MULLION CENTER Application filed April 4, 1928. Serial No. 267,339.

The present invention relates to improvements in window frame constructions and has reference more particularly to a mullion center.

One of the salient objects of the present invention is toprovide a mullion center wherein the inner side edges of the blind stops are formed with tongues for interfitting relation with the respective grooves formed in the side edges of afiller member whereby cold air is prevented from entering the room thereby providing an air-proof window frame.

One of the important objects of the present invention is to provide an improved mullion center which includes a filler member, means being provided at the side edges of the tiller for interlocking engagement with the opposite blind stops or rails, the filler being further of such construction as to afford an air space between the outer front side of the filler and the outer casing of the window frame. 1

A further object is to provide a mullioncenter which is simple in construction, in expensive, strong and durable and further well adapted to the purposes for which it is designed.

Other objects and advantages will become apparent during the course of the following description.

In the accompanying drawing, forming a part of this specification, and in which like numerals indicate like parts throughout the same:

Figure 1 is a horizontal sectional view through a mullion. center showing my improvide filler in position, and

Figure 2 is a vertical sectional view for more clearly illustrating the beveled lower edge of the filler that engages with the upper face of the window sill.

In the drawing wherein for the purpose of illustration is shown the preferred embodiment of my invention, the numeral 1 designates generally a portion of a mullion center of a window frame, the same including a sill member 2 which is disposed at an incline and extending upwardly from the sill member 2 are the vertical walls 3 and 4 respectively the same being arranged in spaced relation. Vertically disposed blind stops or rails 5 and 6 are arranged adjacent the forward edges of the respective side walls, the forward edges of the side walls being formed with tongues that engage within suitable grooves or notches formed in the rear faces of the respective blind stops as shown generally at 7 in Figure 1. The inner opposed faces of the blind stops are formed with the longitudinally extending tongues 8 and 9 respectively and the purpose thereof will be presently apparent.

The outer front faces of the blind stops or rails terminate flush with the shoulder 10 formed in the upper face of the inclined sill member 2 at the forward edge portion thereof and the outside casing 11 is adapted to be disposed against the front faces of the forward blind stops or rails and the lower edge of this casing is beveled to pro erly engage with the inclined upper face 0 the sill member and furthermore the lower portion of the window frame casing will abut against the shoul der 10.

Additional blind stops 12 and 13 are arranged rearwardly of the forward blind stops 5 and 6 in spaced relation thereto to form channels for receiving the sliding window sashes not shown, and these rear window sash stops are set in suitable cutout portions formed in the outer faces of the side walls as clearly disclosed in Figure 1. v

The invention comprehends the provision of a filler-14 that is disposed between the forward sash rails 5 and 6 and the side edges of this filler are formed with longitudinally ex tending grooves or channels 15 and 16 respectively to receive the tongues 8 and 9 whereby to provide an interlocking connec- 1t lign between the blind stops 5 and 6 and the The lower edge of the filler member 14 is beveled whereby to properly rest upon the inclined sill member 2 and it will be observed that the front form an air chamber 17 between the casing 11 and the filler.

The simplicity of my invention enables the parts to be readily and easily assembled and a face of the filler is cut out to Q operating strong and durable construction will be provided.

\Vhile I have shown the preferred embodiment of my invention, it is to be understood that various changes in the size, shape and arrangement of parts may be resorted to without departing from the spirit of the invention and the scope of the appended claim.

Having thus described my invention, what I claim is 2- In a mullion center for window frames, a sill, a pair of spaced side walls extending upwardly therefrom, blind stops at the forward edges of the respective side walls, co-

blind stops extending from the outer sides of the walls rearwardly of the first mentioned blind stops, an outer casing 'for resting upon the sill and disposed adjacent the front faces of the forward blind stops, a filler member disposed between the forward blind stop, the side edges thereof being formed with longitudinally extending grooves, tongues formed on the inner opposed side edges of the forward blind stops for cooperation with the respective grooves to afford an interlocking connection between the front blind stop and said filler member, the front side of the filler member being cut-out to provide a space between the filler and the adjacent side of the outer casing.

In testimony whereof I afiix my signature OSCAR SCHIELD. 

